Optical instrument for testing organic liquids



April 30,1935; v -1,999,889

OPTICAL INSTRUMENT FOR TESTING ORGANIC LIQUI DS- v E. ANSELMI F iled Jan. 4, 1933 Patented Apr. 30, 1935 r e v 1,999,889

UNITED STATESl -ATENT OFFICE OPTICAL V v v Ernesto Anselmi, Vlterbo, Italy Application January 4, 1933, Serial No. 650,159 In Italy Januaryll, 1932 I 2 Claims. (01. ans 7 I} My invention relates to a 'pocketable optical or-spatula asfa measure for taking the reagents instrument allowing the observation, without the '"alndf'for,introducing them in the liquid, by a" use of lenses, of the peculiaritiesand singledefi forceps n tofhandle and clean the test glasses bya pipette, and so on; The; reagents con tails, not discernible or not very discernible in f the usual chemical reactions in test tubes',';- Qf

physico-chemical phenomena 'in' organic"liquids? v o by precipitation, coagulation, flocculation, and 'so COif 8SD n i h 11 1 8 1pa %ll p p on, and particularly suitable for the analysis 013 fi l l'gl li of li h -We h material S 85 0 urine by an examination of only a fewidropsof aluminum-,g bakelite,orebonite. :The saidc'asing v liquid on the bedof the patent. The instrument 139i ed in thfebox- If by means of two sidemay be called Uropathoscope. The instrument; grooves(notshownin the drawing). holding-it according to my invention is employed by a new hen'ithe instrument is closed (Fig. 1) ,When an method of observing the said phenomena; aswillj Y i ha be d ma bOX p ed,

be described in the following specificationx he asifng' l3 taken out, lifting it by its knob; The instrument according to my invention i' e disclosed in the annexed drawing, otwhicin-T Fig. 1 is an elevational view of the instrument] closed; v i v Figs. 2 and 3 show in elevation the instrument opened in two diiferent positions of use; b Fig. 4 is a perspective view showing the inthe-reagent-casing;l3iandis v this very simple.

, one movement, the; observe J The instrument, as shown in the 'drawing, conall that is necessary for his e amination.

sists of a metallic box I, internally blackened, of For the observatiomapproach the instrument g5,

pocketable dimensions, and provided with'a secto a window or a lamp so as to have the lighttional cover, the main section 2 being slidable possibly from above under an angle of about 45;

along the side-walls of the box, and having at one take out from the metallic box I the reagent casend two circular holes, and having at the inner ing and the cylindrical box with the test-glasses,

end a hinge-joint 3, so as to allow the plain secso as to discover the mirror fixed on the bottom 0 tion 4 to be raised as shown in the Figures 2 of the casing. Fit on the casing the cover 2,1eavand 3. On the bottom of the little box, a coning the section 4 raised (Figs. 2 and 3), place one cave mirror 5 is fixed in such a position that of the small'glasses or dishes of the equipment a ray cf light,6, entering in the box from the in each of the two holes in the cover, and by outside, refracted by the liquid to be tested and means of apipette,placeineach glass2 or 3 drops passing through the holes in the cover, may fall oi urine.

on the mirror, and will be reflected to the point It is advisable to make at once an observation 7 representingthe eyes of the observer; the secin order to get a notion-of thecharacteristics of tion 4 of the cover being raised as shown in Fi the liquid to be tested, looking at the image reures 2 and 3. flected by the mirror. Then, with the small spat- 0 The instrument is further provided with a numula, take out from the reagent tube No. 1 (sulber of chemical reagents all of them in solid or pho-salicylic acid) just the quantity of reagent solidified form for the difierent reactions to execontained by the spatula, without over-measure,

cute and with a number of little concave dishes and introduce it in the liquid of one of the two 9, l0, entirely free of impurities or blisters which dishes. The same is to be done with the contents could alter their perfect transparency, and capaof the reagent tube No. 2 (citric or tartaric acid ble of containing two, to three drops of the liquid in finest powder), putting in the second dish to be tested. The dishes 9 and I0 may be made the quantity of reagent contained 'on a spatula of-glass or use may be made for cold reactions well filled up. Observe, as soon as possible, the

of little celluloid 'or other transparent material imagereflected by the mirror in the first and dishes, to be destroyed after the test, for sake in the .second dish, by placing the instrument of hygiene and cleanliness. The Figures 2 and alternatively in the two positions shown in the 3 show the dishes 9 and I0 applied over the Figures 1 and 2, sliding the cover along the-box,

holes of the cover in positionfor observation. The so that to the eye appears alternatively the image instrument is completed by a very small spoon of the one and of the other test glass. This operstrument when the test glass is heated by a thi's'Ca'SjiIlg -ln the liquid containing the searched protein sub stances, are evidently completed and definitive; not more than 1-2 minutes are required.

' with regard to the use of solid reagents only, it may be stated that in the instrument according to the invention, it is always the urine or other liquid in examination which has the function of solvent, this circumstance allowing for the highest simplicity and practical convenience without diminution of the exactness and sensitiveness of the instrument. v

I claim: s

1. A pocket optical instrument adapted for extemporary and quick clinical examinations of organic liquids, specially of urine, without the use of lenses, comprising in combination an internally blackened box, a concave mirror mounted on the uppers'urface of the bottom of the box, a cover for the box composed of two sections, one of the sections being pivoted to the other and being raisable'to allow the observation of the mirror, the other section being apertured and adapted to receive two transparent test dishes so as to allow the rays of light to fall through the test liquids on the mirror, and being slidable on the box when the first section is in a raised position so as to allow alternative and comparative observation of two transparency images in the mirror. V

2. A pocket optical instrument adapted for extemporary and quick clinical examinations of organic liquids, specially of urine, without the use of lenses, comprising in combination an internaliy blackened box, a concave mirror mounted on the upper surface of the bottom of the box, a cover for the box composed of two sections, one 01 the sections being pivoted to the other and servation of two transparency images in the mirror, the space between the bottom of the box and the cover when the latter is closed constituting a 1 being raisable to allow the observation of the mirfree room adapted toreceive" an equipment carrying casing. 7 i

I ERNESTO ANSELMI. 

